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- /******************************************************************************
- Copyright (C) 2014 by Hugh Bailey <[email protected]>
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
- #include "util/bmem.h"
- #include "util/darray.h"
- #include "obs-data.h"
- struct obs_data_item {
- volatile int ref;
- struct obs_data *parent;
- struct obs_data_item *next;
- enum obs_data_type type;
- size_t name_len;
- size_t data_len;
- size_t capacity;
- };
- struct obs_data {
- volatile int ref;
- char *json;
- struct obs_data_item *first_item;
- };
- struct obs_data_array {
- volatile int ref;
- DARRAY(obs_data_t) objects;
- };
- /* ------------------------------------------------------------------------- */
- /* Item structure, designed to be one allocation only */
- /* ensures data after the name has alignment (in case of SSE) */
- static inline size_t get_name_align_size(const char *name)
- {
- size_t name_size = strlen(name) + 1;
- size_t alignment = base_get_alignment();
- size_t total_size;
- total_size = sizeof(struct obs_data_item) + (name_size + alignment-1);
- total_size &= ~(alignment-1);
- return total_size - sizeof(struct obs_data_item);
- }
- static inline char *get_item_name(struct obs_data_item *item)
- {
- return (char*)item + sizeof(struct obs_data_item);
- }
- static inline void *get_item_data(struct obs_data_item *item)
- {
- return (uint8_t*)get_item_name(item) + item->name_len;
- }
- static inline size_t obs_data_item_total_size(struct obs_data_item *item)
- {
- return sizeof(struct obs_data_item) + item->data_len + item->name_len;
- }
- static inline obs_data_t get_item_obj(struct obs_data_item *item)
- {
- if (!item)
- return NULL;
- return *(obs_data_t*)get_item_data(item);
- }
- static inline obs_data_array_t get_item_array(struct obs_data_item *item)
- {
- if (!item)
- return NULL;
- return *(obs_data_array_t*)get_item_data(item);
- }
- static inline void item_data_release(struct obs_data_item *item)
- {
- if (item->type == OBS_DATA_OBJECT) {
- obs_data_t obj = get_item_obj(item);
- obs_data_release(obj);
- } else if (item->type == OBS_DATA_ARRAY) {
- obs_data_array_t array = get_item_array(item);
- obs_data_array_release(array);
- }
- }
- static inline void item_data_addref(struct obs_data_item *item)
- {
- if (item->type == OBS_DATA_OBJECT) {
- obs_data_t obj = get_item_obj(item);
- obs_data_addref(obj);
- } else if (item->type == OBS_DATA_ARRAY) {
- obs_data_array_t array = get_item_array(item);
- obs_data_array_addref(array);
- }
- }
- static struct obs_data_item *obs_data_item_create(const char *name,
- const void *data, size_t size, enum obs_data_type type)
- {
- struct obs_data_item *item;
- size_t name_size, total_size;
- if (!name || !data)
- return NULL;
- name_size = get_name_align_size(name);
- total_size = name_size + sizeof(struct obs_data_item) + size;
- item = bzalloc(total_size);
- item->capacity = total_size;
- item->type = type;
- item->name_len = name_size;
- item->data_len = size;
- item->ref = 1;
- strcpy(get_item_name(item), name);
- memcpy(get_item_data(item), data, size);
- item_data_addref(item);
- return item;
- }
- static struct obs_data_item **get_item_prev_next(struct obs_data *data,
- struct obs_data_item *current)
- {
- if (!current || !data)
- return NULL;
- struct obs_data_item **prev_next = &data->first_item;
- struct obs_data_item *item = data->first_item;
- while (item) {
- if (item == current)
- return prev_next;
- prev_next = &item->next;
- item = item->next;
- }
- return NULL;
- }
- static inline void obs_data_item_detach(struct obs_data_item *item)
- {
- struct obs_data_item **prev_next = get_item_prev_next(item->parent,
- item);
- if (prev_next) {
- *prev_next = item->next;
- item->next = NULL;
- }
- }
- static inline void obs_data_item_reattach(struct obs_data_item *old_ptr,
- struct obs_data_item *new_ptr)
- {
- struct obs_data_item **prev_next = get_item_prev_next(new_ptr->parent,
- old_ptr);
- if (prev_next)
- *prev_next = new_ptr;
- }
- static struct obs_data_item *obs_data_item_ensure_capacity(
- struct obs_data_item *item)
- {
- size_t new_size = obs_data_item_total_size(item);
- struct obs_data_item *new_item;
- if (item->capacity >= new_size)
- return item;
- new_item = brealloc(item, new_size);
- new_item->capacity = new_size;
- obs_data_item_reattach(item, new_item);
- return new_item;
- }
- static inline void obs_data_item_destroy(struct obs_data_item *item)
- {
- item_data_release(item);
- obs_data_item_detach(item);
- bfree(item);
- }
- static inline void obs_data_item_setdata(
- struct obs_data_item **p_item, const void *data, size_t size,
- enum obs_data_type type)
- {
- if (!p_item || !*p_item)
- return;
- struct obs_data_item *item = *p_item;
- item_data_release(item);
- item->data_len = size;
- item->type = type;
- item = obs_data_item_ensure_capacity(item);
- if (size) {
- memcpy(get_item_data(item), data, size);
- item_data_addref(item);
- }
- *p_item = item;
- }
- /* ------------------------------------------------------------------------- */
- obs_data_t obs_data_create()
- {
- struct obs_data *data = bzalloc(sizeof(struct obs_data));
- data->ref = 1;
- return data;
- }
- obs_data_t obs_data_create_from_json(const char *json_string)
- {
- /* TODO */
- #pragma message ("TODO: implement obs_data_create_from_json")
- UNUSED_PARAMETER(json_string);
- return NULL;
- }
- void obs_data_addref(obs_data_t data)
- {
- if (data)
- ++data->ref;
- }
- static inline void obs_data_destroy(struct obs_data *data)
- {
- struct obs_data_item *item = data->first_item;
- while (item) {
- struct obs_data_item *next = item->next;
- obs_data_item_release(&item);
- item = next;
- }
- bfree(data->json);
- bfree(data);
- }
- void obs_data_release(obs_data_t data)
- {
- if (!data)
- return;
- if (--data->ref == 0)
- obs_data_destroy(data);
- }
- const char *obs_data_getjson(obs_data_t data)
- {
- /* TODO */
- #pragma message ("TODO: implement obs_data_getjson")
- return data->json;
- }
- static struct obs_data_item *get_item(struct obs_data *data, const char *name)
- {
- if (!data)
- return NULL;
- struct obs_data_item *item = data->first_item;
- while (item) {
- if (strcmp(get_item_name(item), name) == 0)
- return item;
- item = item->next;
- }
- return NULL;
- }
- static inline struct obs_data_item *get_item_of(struct obs_data *data,
- const char *name, enum obs_data_type type)
- {
- struct obs_data_item *item = get_item(data, name);
- return (item && item->type == type) ? item : NULL;
- }
- static void set_item_data(struct obs_data *data, struct obs_data_item *item,
- const char *name, const void *ptr, size_t size,
- enum obs_data_type type)
- {
- if (!item) {
- item = obs_data_item_create(name, ptr, size, type);
- item->next = data->first_item;
- item->parent = data;
- data->first_item = item;
- } else {
- obs_data_item_setdata(&item, ptr, size, type);
- }
- }
- static inline void set_item(struct obs_data *data, const char *name,
- const void *ptr, size_t size, enum obs_data_type type)
- {
- if (!data)
- return;
- struct obs_data_item *item = get_item(data, name);
- set_item_data(data, item, name, ptr, size, type);
- }
- static inline void set_item_def(struct obs_data *data, const char *name,
- const void *ptr, size_t size, enum obs_data_type type)
- {
- if (!data)
- return;
- struct obs_data_item *item = get_item(data, name);
- if (item && item->type == type)
- return;
- set_item_data(data, item, name, ptr, size, type);
- }
- static inline void copy_item(struct obs_data *data, struct obs_data_item *item)
- {
- const char *name = get_item_name(item);
- void *ptr = get_item_data(item);
- set_item(data, name, ptr, item->data_len, item->type);
- }
- void obs_data_apply(obs_data_t target, obs_data_t apply_data)
- {
- struct obs_data_item *item;
- if (!target || !apply_data || target == apply_data)
- return;
- item = apply_data->first_item;
- while (item) {
- copy_item(target, item);
- item = item->next;
- }
- }
- void obs_data_erase(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item(data, name);
- if (item) {
- obs_data_item_detach(item);
- obs_data_item_release(&item);
- }
- }
- void obs_data_setstring(obs_data_t data, const char *name, const char *val)
- {
- if (!val) val = "";
- set_item(data, name, val, strlen(val)+1, OBS_DATA_STRING);
- }
- void obs_data_setint(obs_data_t data, const char *name, long long val)
- {
- double f_val = (double)val;
- set_item(data, name, &f_val, sizeof(double), OBS_DATA_NUMBER);
- }
- void obs_data_setdouble(obs_data_t data, const char *name, double val)
- {
- set_item(data, name, &val, sizeof(double), OBS_DATA_NUMBER);
- }
- void obs_data_setbool(obs_data_t data, const char *name, bool val)
- {
- set_item(data, name, &val, sizeof(bool), OBS_DATA_BOOLEAN);
- }
- void obs_data_setobj(obs_data_t data, const char *name, obs_data_t obj)
- {
- set_item(data, name, &obj, sizeof(obs_data_t), OBS_DATA_OBJECT);
- }
- void obs_data_setarray(obs_data_t data, const char *name,
- obs_data_array_t array)
- {
- set_item(data, name, &array, sizeof(obs_data_t), OBS_DATA_ARRAY);
- }
- void obs_data_set_default_string(obs_data_t data, const char *name,
- const char *val)
- {
- if (!val) val = "";
- set_item_def(data, name, val, strlen(val)+1, OBS_DATA_STRING);
- }
- void obs_data_set_default_int(obs_data_t data, const char *name, long long val)
- {
- double f_val = (double)val;
- set_item_def(data, name, &f_val, sizeof(double), OBS_DATA_NUMBER);
- }
- void obs_data_set_default_double(obs_data_t data, const char *name, double val)
- {
- set_item_def(data, name, &val, sizeof(double), OBS_DATA_NUMBER);
- }
- void obs_data_set_default_bool(obs_data_t data, const char *name, bool val)
- {
- set_item_def(data, name, &val, sizeof(bool), OBS_DATA_BOOLEAN);
- }
- void obs_data_set_default_obj(obs_data_t data, const char *name, obs_data_t obj)
- {
- set_item_def(data, name, &obj, sizeof(obs_data_t), OBS_DATA_OBJECT);
- }
- const char *obs_data_getstring(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item_of(data, name, OBS_DATA_STRING);
- return item ? get_item_data(item) : "";
- }
- long long obs_data_getint(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item_of(data, name, OBS_DATA_NUMBER);
- return item ? (long long)*(double*)get_item_data(item) : 0;
- }
- double obs_data_getdouble(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item_of(data, name, OBS_DATA_NUMBER);
- return item ? *(double*)get_item_data(item) : 0.0;
- }
- bool obs_data_getbool(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item_of(data, name, OBS_DATA_BOOLEAN);
- return item ? *(bool*)get_item_data(item) : false;
- }
- obs_data_t obs_data_getobj(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item_of(data, name, OBS_DATA_OBJECT);
- obs_data_t obj = get_item_obj(item);
- if (obj)
- obj->ref++;
- return obj;
- }
- obs_data_array_t obs_data_getarray(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item_of(data, name, OBS_DATA_ARRAY);
- obs_data_array_t array = get_item_array(item);
- if (array)
- array->ref++;
- return array;
- }
- obs_data_array_t obs_data_array_create()
- {
- struct obs_data_array *array = bzalloc(sizeof(struct obs_data_array));
- array->ref = 1;
- return array;
- }
- void obs_data_array_addref(obs_data_array_t array)
- {
- if (array)
- ++array->ref;
- }
- static inline void obs_data_array_destroy(obs_data_array_t array)
- {
- for (size_t i = 0; i < array->objects.num; i++)
- obs_data_release(array->objects.array[i]);
- da_free(array->objects);
- bfree(array);
- }
- void obs_data_array_release(obs_data_array_t array)
- {
- if (!array)
- return;
- if (--array->ref == 0)
- obs_data_array_destroy(array);
- }
- size_t obs_data_array_count(obs_data_array_t array)
- {
- return array->objects.num;
- }
- obs_data_t obs_data_array_item(obs_data_array_t array, size_t idx)
- {
- obs_data_t data;
- data = (idx < array->objects.num) ? array->objects.array[idx] : NULL;
- if (data)
- data->ref++;
- return data;
- }
- size_t obs_data_array_push_back(obs_data_array_t array, obs_data_t obj)
- {
- obj->ref++;
- return da_push_back(array->objects, &obj);
- }
- void obs_data_array_insert(obs_data_array_t array, size_t idx, obs_data_t obj)
- {
- obj->ref++;
- da_insert(array->objects, idx, &obj);
- }
- void obs_data_array_erase(obs_data_array_t array, size_t idx)
- {
- obs_data_release(array->objects.array[idx]);
- da_erase(array->objects, idx);
- }
- /* ------------------------------------------------------------------------- */
- /* Item iteration */
- obs_data_item_t obs_data_first(obs_data_t data)
- {
- if (data->first_item)
- data->first_item->ref++;
- return data->first_item;
- }
- obs_data_item_t obs_data_item_byname(obs_data_t data, const char *name)
- {
- struct obs_data_item *item = get_item(data, name);
- if (item)
- item->ref++;
- return item;
- }
- bool obs_data_item_next(obs_data_item_t *item)
- {
- if (item && *item) {
- (*item)->ref--;
- *item = (*item)->next;
- if (*item) {
- (*item)->ref++;
- return true;
- }
- }
- return false;
- }
- void obs_data_item_release(obs_data_item_t *item)
- {
- if (item && *item) {
- int ref = --(*item)->ref;
- if (!ref) {
- obs_data_item_destroy(*item);
- *item = NULL;
- }
- }
- }
- void obs_data_item_remove(obs_data_item_t *item)
- {
- if (item && *item) {
- obs_data_item_detach(*item);
- obs_data_item_release(item);
- }
- }
- enum obs_data_type obs_data_item_gettype(obs_data_item_t item)
- {
- return item->type;
- }
- void obs_data_item_setstring(obs_data_item_t *item, const char *val)
- {
- if (!val) val = "";
- obs_data_item_setdata(item, val, strlen(val)+1, OBS_DATA_STRING);
- }
- void obs_data_item_setint(obs_data_item_t *item, long long val)
- {
- double f_val = (double)val;
- obs_data_item_setdata(item, &f_val, sizeof(double), OBS_DATA_NUMBER);
- }
- void obs_data_item_setdouble(obs_data_item_t *item, double val)
- {
- obs_data_item_setdata(item, &val, sizeof(double), OBS_DATA_NUMBER);
- }
- void obs_data_item_setbool(obs_data_item_t *item, bool val)
- {
- obs_data_item_setdata(item, &val, sizeof(bool), OBS_DATA_BOOLEAN);
- }
- void obs_data_item_setobj(obs_data_item_t *item, obs_data_t val)
- {
- obs_data_item_setdata(item, &val, sizeof(obs_data_t), OBS_DATA_OBJECT);
- }
- void obs_data_item_setarray(obs_data_item_t *item, obs_data_array_t val)
- {
- obs_data_item_setdata(item, &val, sizeof(obs_data_array_t),
- OBS_DATA_ARRAY);
- }
- static inline bool item_valid(struct obs_data_item *item,
- enum obs_data_type type)
- {
- return item && item->type == type;
- }
- const char *obs_data_item_getstring(obs_data_item_t item)
- {
- return item_valid(item, OBS_DATA_STRING) ? get_item_data(item) : "";
- }
- long long obs_data_item_getint(obs_data_item_t item)
- {
- return item_valid(item, OBS_DATA_NUMBER) ?
- (long long)*(double*)get_item_data(item) : 0;
- }
- double obs_data_item_getdouble(obs_data_item_t item)
- {
- return item_valid(item, OBS_DATA_NUMBER) ?
- *(double*)get_item_data(item) : 0.0;
- }
- bool obs_data_item_getbool(obs_data_item_t item)
- {
- return item_valid(item, OBS_DATA_BOOLEAN) ?
- *(bool*)get_item_data(item) : false;
- }
- obs_data_t obs_data_item_getobj(obs_data_item_t item)
- {
- obs_data_t obj = item_valid(item, OBS_DATA_OBJECT) ?
- get_item_obj(item) : NULL;
- if (obj)
- obj->ref++;
- return obj;
- }
- obs_data_array_t obs_data_item_getarray(obs_data_item_t item)
- {
- obs_data_array_t array = item_valid(item, OBS_DATA_ARRAY) ?
- get_item_array(item) : NULL;
- if (array)
- array->ref++;
- return array;
- }
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